[IonutCava]- Fixed viewport alignment issue- Added per-player RenderTargets (added index support to GFXRTPool)- Initial implementation of per-player cameras— Removed defaultCamera— Scenes now use a baseCamera as a template for new player cameras

[IonutCava]- More performance analysis guided optimizations.- Some refactoring to allow later removal of Singletons status for: GFXDevice, SFXDevice, PXDevice, GUI and Input.— Pass a PlatformContext around objects to access these classes.

[IonutCava]- Removed the CameraManager and move most of its functionality into static members of the Camera class- Removed Camera push/pop system in favour of a stateless ptr based system to better fit the RenderPass structure